/// <summary>
/// Internet Control Message Protocol (ICMP) echo message 를 비동기적으로 보냅니다.
/// </summary>
private static Task<PingReply> SendTaskCore(Ping ping, object userToken, Action<TaskCompletionSource<PingReply>> sendAsync) {
ping.ShouldNotBeNull("ping");
sendAsync.ShouldNotBeNull("sendAsync");
if(IsDebugEnabled)
log.Debug("Ping 작업을 비동기적으로 수행하는 Task를 생성합니다...");
var tcs = new TaskCompletionSource<PingReply>(userToken);
PingCompletedEventHandler handler = null;
handler = (sender, e) => EventAsyncPattern.HandleCompletion(tcs, e, () => e.Reply, () => ping.PingCompleted -= handler);
ping.PingCompleted += handler;
try {
sendAsync(tcs);
}
catch(Exception ex) {
ping.PingCompleted -= handler;
tcs.TrySetException(ex);
}
return tcs.Task;
}